On Wed, Dec 30, 2015 at 09:39:12PM +0100, Stefano Danzi wrote:
> Hi Dan,
> some info about my network setup:
> 
> - My bond is used only for VM networking. ovirtmgmt has a dedicated ethernet
> card.
> - I haven't set any ethtool opts.
> - Nics on bond specs:
> 04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network
> Connection
>         Subsystem: ASUSTeK Computer Inc. Motherboard
>         Flags: bus master, fast devsel, latency 0, IRQ 16
>         Memory at df200000 (32-bit, non-prefetchable) [size=128K]
>         I/O ports at e000 [size=32]
>         Memory at df220000 (32-bit, non-prefetchable) [size=16K]
>         Capabilities: [c8] Power Management version 2
>         Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
>         Capabilities: [e0] Express Endpoint, MSI 00
>         Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
>         Capabilities: [100] Advanced Error Reporting
>         Kernel driver in use: e1000e
> 
> [root@ovirt01 ~]# ifconfig
> DMZ: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 0  (Ethernet)
>         RX packets 43546  bytes 2758816 (2.6 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 0  bytes 0 (0.0 B)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> LAN_HAW: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 0  (Ethernet)
>         RX packets 2090262  bytes 201078292 (191.7 MiB)
>         RX errors 0  dropped 86  overruns 0  frame 0
>         TX packets 0  bytes 0 (0.0 B)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>  mtu 1500
>         txqueuelen 0  (Ethernet)
>         RX packets 2408059  bytes 456371629 (435.2 MiB)
>         RX errors 0  dropped 185  overruns 0  frame 0
>         TX packets 118966  bytes 14862549 (14.1 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> bond0.1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 0  (Ethernet)
>         RX packets 2160985  bytes 210157656 (200.4 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 0  bytes 0 (0.0 B)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> bond0.3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 0  (Ethernet)
>         RX packets 151195  bytes 185253584 (176.6 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 118663  bytes 13857950 (13.2 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> enp4s0: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500
>         txqueuelen 1000  (Ethernet)
>         RX packets 708141  bytes 95034564 (90.6 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 16714  bytes 5193108 (4.9 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>         device interrupt 16  memory 0xdf200000-df220000
> 
> enp5s0: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500
>         txqueuelen 1000  (Ethernet)
>         RX packets 1699934  bytes 361339105 (344.5 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 102252  bytes 9669441 (9.2 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>         device interrupt 17  memory 0xdf100000-df120000
> 
> enp6s1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 1000  (Ethernet)
>         RX packets 2525232  bytes 362345893 (345.5 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 388452  bytes 208145492 (198.5 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>         inet 127.0.0.1  netmask 255.0.0.0
>         loop  txqueuelen 0  (Local Loopback)
>         RX packets 116465661  bytes 1515059255942 (1.3 TiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 116465661  bytes 1515059255942 (1.3 TiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> ovirtmgmt: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet 192.168.1.50  netmask 255.255.255.0  broadcast 192.168.1.255
>         txqueuelen 0  (Ethernet)
>         RX packets 3784298  bytes 555536509 (529.8 MiB)
>         RX errors 0  dropped 86  overruns 0  frame 0
>         TX packets 1737669  bytes 1401650369 (1.3 GiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 500  (Ethernet)
>         RX packets 558574  bytes 107521742 (102.5 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 1316892  bytes 487764500 (465.1 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> vnet1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 500  (Ethernet)
>         RX packets 42282  bytes 7373007 (7.0 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 40498  bytes 17598215 (16.7 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> vnet2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         txqueuelen 500  (Ethernet)
>         RX packets 79388  bytes 16807917 (16.0 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 164596  bytes 183858757 (175.3 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> 
> 
>  cat /proc/net/bonding/bond0
> Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
> 
> Bonding Mode: load balancing (xor)
> Transmit Hash Policy: layer2 (0)
> MII Status: up
> MII Polling Interval (ms): 100
> Up Delay (ms): 0
> Down Delay (ms): 0
> 
> Slave Interface: enp4s0
> MII Status: up
> Speed: 1000 Mbps
> Duplex: full
> Link Failure Count: 0
> Slave queue ID: 0
> 
> Slave Interface: enp5s0
> MII Status: up
> Speed: 1000 Mbps
> Duplex: full
> Link Failure Count: 0
> Slave queue ID: 0

I do not see anything suspecious here.

Which kernel version worked well for you?

Would it be possible to boot the machine with it, and retest bond mode
4, so that we can whole-heartedly place the blame on kernel?
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